EP 0077447 A3 19860108 - SECTIONAL X-RAY TABLE HAVING DUAL SERVO DRIVES
Title (en)
SECTIONAL X-RAY TABLE HAVING DUAL SERVO DRIVES
Publication
Application
Priority
US 31168781 A 19811015
Abstract (en)
[origin: EP0077447A2] An x-ray table base, an intermediate support mounted on the base for moving bidirectionally, and a carriage with a patient cradle on it mounted for moving bidirectionally on the support. There are individual servomotors for driving the support and cradle, respectively. Each servomoter drives an analog tachometer. The tachometer signals are compared with ramp signals. When, for example the intermediate support nears the limit of its forward travel, its servo amplifier receives a decreasing ramp signal and the servo amplifier for the cradle motor receives a concurrent increasing ramp signal such that the support decelerates to zero velocity at a predetermined rate and the cradle accelerates to the previous constant velocity of the support at a rate that results in the cradle moving at a constant rate relative to the base.
IPC 1-7
IPC 8 full level
A61B 6/03 (2006.01); A61B 6/04 (2006.01); G05B 19/23 (2006.01)
CPC (source: EP US)
A61B 6/0442 (2013.01 - EP US); A61B 6/0487 (2020.08 - EP US); G05B 19/232 (2013.01 - EP US); G05B 2219/34215 (2013.01 - EP US); G05B 2219/43144 (2013.01 - EP US); G05B 2219/45221 (2013.01 - EP US)
Citation (search report)
[A] US 3861807 A 19750121 - LESCRENIER CHARLES
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0077447 A2 19830427; EP 0077447 A3 19860108; IL 66639 A0 19821231; IL 66639 A 19850630; JP S58121939 A 19830720; JP S642373 B2 19890117; US 4392096 A 19830705
DOCDB simple family (application)
EP 82107626 A 19820820; IL 6663982 A 19820825; JP 18005982 A 19821015; US 31168781 A 19811015